See title. Basically ASUS uses an embedded controller (EC) to manage the external sensors (T_Sensor etc.) on their motherboards. Speedfan does not communicate with this controller, so these external sensors cannot be used in combination with Speedfan. HWInfo64 and AIDA64 are able to read out those external sensors with no problems.

Steps To Reproduce

Launch Speedfan, note that the external sensors are not listed under the 'Temperatures' tab.

Additional Information

I tested on a ASUS Prime Z270-A, but I think all ASUS motherboards with external sensor support (which there are a lot of) are affected.